Question

(b-3)(b+1)-(b-6)(b+6)

Answer 1

b²+b-3b-3-b²+36
b-3b-3+36
-2b=-33
2b=33
b=16?5

Answer 2

b=16,5

Answer 3

(b-3)(b+1)-(b-6)(b+6)=b^2-2b-3-b^2+36=-2b+33